By Paul Streat er When venture capital flows tighten, startups face their most defining test. The exuberance of growth rounds gives way to the discipline of survival. Managing through a capital downturn isn't about hibernation; it's about intelligently extending your runway while maintaining momentum toward value creation.  The past few years have seen cycles of exuberance and retrenchment in venture funding. Today's environment, marked by investor caution, rising interest r